In a significant step towards sustainable transportation, Allison Transmission and global power technology leader Cummins Inc. have announced their collaboration on a groundbreaking electric hybrid drivetrain for the transit market. The partnership will see the integration and certification of a Cummins B-Series engine with Allison’s eGen Flex electric hybrid propulsion system, designed to meet the EPA’s ‘Greenhouse Gas Emissions Standards for Heavy-Duty Vehicles – Phase 3′. This collaborative effort will deliver a reliable and low-emission propulsion solution for transit agencies beginning in 2027 and beyond.
This collaboration marks another milestone in Allison’s commitment to sustainable transportation. The company offers a comprehensive portfolio of propulsion solutions, encompassing fully electric axles, fuel-efficient conventional transmissions compatible with alternative fuels and electric propulsion, and the eGen Flex electric hybrid solution specifically designed for the transit industry. The eGen Flex system provides transit agencies a flexible and efficient path to reducing emissions while maintaining high performance and reliability. This innovative system can operate in engine-off mode for up to 50% of a bus’s typical route, making it particularly effective in reducing emissions in urban areas.
The eGen Flex system’s electric-only mode, activated through geofencing technology, eliminates engine emissions and noise during passenger loading and unloading and while operating in designated dense pedestrian areas and zero-emission zones. This feature significantly contributes to cleaner and quieter transportation within urban environments.
Allison Transmission’s commitment to developing innovative propulsion solutions, coupled with Cummins’ expertise in power technology, makes this collaboration a significant step towards a cleaner and more sustainable future for the transit industry. The integrated eGen Flex system will not only meet stringent EPA emissions standards but also offer transit agencies a reliable and efficient alternative to traditional diesel-powered buses. This partnership is poised to revolutionize the transit market and pave the way for a cleaner and more sustainable transportation landscape.
